Paper-making machine.



E. 'MclNTYRE. PAPER MAKING MACHINE. APPLICATION FILED JULY 5,19i3.

Patented Aug. 10, 1915.

m'l lm" 701a. Me. [mg/fa WINEIELD E. MCINTYRE, OF SYRACUSE, NEW YORK.

PAPER-MAKING MACHINE.

menses.

To all whom it may concern: Be it known that I, VVINFIELD E. McIN- TYRE, a citizen of the United States, residing at Syracuse, in the county of Onondaga g and State of New York, have invented certain new and useful Improvements in Paper- The primary object of the invention is to prevent the newly formed web of tissue or like thin paper from sticking to the press- -rolls, which frequently causes the breaking of the paper and otherwise interferes with the rapid and perfect manufacturev of the same.

29 A further object is to provide a'novel and simple construction and arrangement of the press-rolls, in combination with a separatorroll, whereby the paper is carried directly from the felt to the separator-roll and thence to the first drier. And a further object is to simplify and reduce the number of working parts, whereby less power is re quired to operate the paper forming machinery.

so The features and parts of the invention will be understood from the detailed description which follows and by reference to the accompanying drawing, in which the figure is a side elevation of a paper machine 85 of the cylinder type, to which my improvement is applied.

In the drawing, 2 represents a vat which contains the liquid pulp, in which is disposed a perforated or wire-cloth cylinder mold 3, upon which the layer of pulp is first formed. 4 represents the usual couch-roll, which is disposed above and bears upon the cylinders 3. w

5 and 6 represent the press-rolls, both of which are preferably covered with rubber,

although any suitable metal may be employed for the purpose. The roll 5 is supported by a frame 7 in the usual way, and is driven by a shaft 8'by means of a pair of miter-gears 9 and 9. The roll 6 is disposed directly above and bears upon the roll 5, and is held in place by a half-bearing 10, which is movable vertically in, and is guided by brackets 11 which are supported by the frame 7. The roll 6 is pressed against the roll 5 for giving the required tension for point marked 30, from which the pulp or Specification of Letters Patent. t t Aug 10, 1pm,

Application filed July 5, 1913. Serial at. 777,406.

squeezing the water out of thepulp, bya spring 12 which is controlled by a rod 13, which is rotated by a hand-wheel 14.

15 represents a. third press or separator roll, which contacts with the roll 6, and which is supported at each end by levers 16, which are pivoted at oneend, as at 17, to the brackets 11. The roll 15 is preferably held tightly against the roll 6 by a tension 5 device, which comprises a rod 18, the upper end of which connects with lever 16, while the lower end is pivotedat 19 to a lever 20. f

One end of lever 20 is pivoted to the frame 7 by a pin 21, the opposite end of '70 lever 20 carries a'weight 22, which is adjust; able .on said lever for increasing and decreasing the tension on the roll 15.

The rod 18 is in two sections and is adjustable by means of a turn-buckle 23. v i

The layer of pulp'which is formed on the cylinder 8, is taken therefrom by a felt apron or belt 24, which passes between said 1 cylinder and the couch-roll 4:, thence part- 1 way around the roll at, thence between the 1 press-rolls 5 and 6. The felt 24: then passes downwardly and'back to the forward end of the machine, and in so doing is supported and guided by a series of idler and tension rolls 25, and a pair of squeeze-rolls 26. at

27 represents a second felt apron or belt, which also passes between the rolls 5 and 6 and thence partially around the roll 6, i which drives the said belt, the roll 6 bein driven by friction by the roll 5. The felt 2 is carried and guided through the upper] frame portion 28, by means of a series of idler and tension rolls 29. The web or layer of pulp, as it passes between the rolls 5 and 6, to which it is carried by thefelt 24:, is as taken from said felt by the felt 27, and carried part-way around the roll 6 and between said roll and the roll 15. The layer of pulp then'clings to the roll 15 until it reaches a paper 31 passes to and over a guide roller 32', and from said roller the paper passes directly to the first drier 33, without the aid of any felt. The arrows throughout the drawing indicate the directions in which the various parts travel in doing theirwork.

Just before the upper felt 27 reaches the roll 6, it passes over a box 35, in which is disposed a whipper 36, which is driven by a belt 37. The whipper is of the usual construction, having a number of bars 38, which beat against the felt, thereby loosening up press-rolls 5 and 6, each having an independent felt apron between which the new layer of paper is carried, and by which practically all of the water is squeezed out of the pulp, in connection with the separator-roll 15, which takes the damp web of paper from the felt 27, I am able to carry 'or run the paper direct from the roll 15 to the first drier 33 without the aid of any felt. By this arrangement several extra couch and squeeze rolls and also other parts are eliminated, so that I am able to operate the rolls 5, 6 and 15 and also the two felts by a single drive comprising the shaft 8 and the gears 9 and 9. This efi'ects a considerate saving in the power, and in addition greatly simplifies and cheapens the construction of the working parts of the machine. Any desired tension may be applied to the roll. 15, but I prefer only to use enough pressure to enable the said roll to pick up and carry the web or layer of damp paper away from the belt '27.

Heretofore, practically all of the pressing of the layers of tissue paper has been done by press rolls corresponding to the rolls 5 and 6, in connection with a single felt, with the result that the paper adheres too tightly to the bare upper roll 6, which prevents its free delivery to the driers, and which frequently causes the paper to break. But by the employment of the two felts 24 and 27, practically all of the pressing is done between the said felts by the rolls Sand 6, and there is little danger ofthe paper sticking to the roll 15, tightly enough to tear or break the layer, and I am therefore able to operate my machine for intervals of weeks at a time without having any breaks in the paper. In practice the upper felt 27 is a heavy closely woven belt, while the lower said felt. By this arrangement, the paper r adily follows th upp r felt, and s also readily taken from said felt by the roll 15,-

which delivers the paper to the first drier, as described.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In a machine for making tissue paper, the combination with a cylinder, a couch roll, a pair of press rolls, and a drier, of a pair of felts, one of the felts passing between the couch roll and cylinder an carrying the paper between the press rolls, the second felt also passing between the press rolls, and a separate roll bearing directly against the felt upon one of the press rolls at a decreased pressure from that at which the press rolls are held in contact, said second felt serving to carry the paper from be tween the press rolls to the said separator,

roll.

2. A machine for making tissue paper, comprising a vat, a cylinder in said vat, a couch roll meshing, with said cylinder, a pair of press rolls; 'a drier, and a pair of felts, one of the felts passing betwc the couch roll and cylinder, and carryin Me paper between the press rolls, and the second felt also passing between the press rolls, of a separator roll bearing directl against the felt upon one of the press rol s, means for holding the said separator roll pressed against the felt upon said press roll at a pressure less than the pressure at which the press rolls are held together, and means for maintaining the second felt drier than the other felt so that the former serves to carry the paper between the press rolls to the separator roll, said separator roll being frictionally driven by the said press roll through the engagement of the separator.

roll with the-said felt and press roll, substantially as and for the described purpose. In testimony whereof I afiix my signature in presence of two witnesses.

WVINFIELD E. MoIN TYRE. Witnesses:

HARRY DE WALLACE, E. C. WRIGHT. 

